Friction-clutch.



P AIENTED JULY 23 A.B.GAGN0N. PRIGTIo-N CLUTCH.

APPLICATION FILED DBO.24,1908

v view on .the line x-zz ot Fig. 1.

""17 provided in the web of the disk 13. `These arms lGlutches, of which thefollowing is agspecication.

f UNITED STATES PATENT oEEroE.

ANDREW E. GAGNON, 0F MINNEAPOLis, MINNESOTA.,

FRICTIGN-CLUTGH.

To all `whom it may concern: Be it known that I, ANDREW E; GAGNoN,.of Minneapolis, Hennepin county,I Minnesota,vhave invented certain new and useful Improvements in Friction- The object ofmy invention 'is toprbvide a friction clutch?? wherein all danger of breakage between the gripping surfaces of the clutch and the hub of the pulley will be avoided. As usually constructed clutches of' this type have arms secured on the shaft and su'pporting the gripping surfaces and these arms frequently become broken, particularly when subjected to a sudden or severe strain, and-cause considerable delay and annoyance in the operation of the pulley and its connections. f j

My invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a sectional view of a friction pulley embodying my invention. Fig. 2 isa sectional Fig. S'is a sectional view on the line y-y oi Fig. 2.

In the drawing, 2 represents a shaft and 3 a pulley having a hub 4 splined on a sleeve 5/that is loosely journaled onthe shaft-2. The pulley has a bearing' block 6 and' arms 7 pivoted at 8 onv the pulley, and carrying blocks 9 and operated by means of bell crank levers lOhaving one arm pivoted to a sliding collar ll and the other pivoted to links 12 that are mounted on the hub 4. A disk 13 is loosely journale'd 0n the hub 4 and has its peripheral edge extending outwardly between the bearing blocks 6 and v9 to be gripped and held thereby when the arms 7'are moved to their locking position; The disk extends radially in astraight line, preferably, from its bearing point on the hub toits yplace of contact"wit h the grippingblocks. A hub 14 is keyed on the shaft 2 and hasa series of arms 15 radiating therefrom and terminating in inwardly turned ends 16V that t loosely into sockets permit the disk to rock back and forth and move slightly in a rotary direction but prevent it from moving in such direction for any considerable distance. The arms are connected with one another by we bs 18, and bolts 19 pass through holes in these webs and in the diek 13 end heve springe zowhi'eh yieidihgiy heid the ends 16 in their sockets but allow the disk to rock or sway lengthwise of the shaft to accommodate itselfl to the different positions of the gripping blocks or the pulley without throwing' unnecessary or undue strain upon the arms 15 and their connection with the shaft.

When the pulley is not in use the disk will tur-n freely*v on the hub of the pulley but when the gripping blocks speeincetien of Letters Patent.

VApplication illed December 24, 1906i Serial No. 349,283.-

are moved into engagement with the .surface of the Patented .rely 23, 1907.

disk it will be prevented from turning and the movement of the shaft will be" transmitted through the arms l5 to the disk to lock the pulley-,on the shaft. The loose connection between `the disk and the armafand the manner of mounting the disk directlynpon the' hub of the pulley will relieve the. parts of'a large proportion of the strain and the danger of breakage to which they are this kind. ,l

I claimV as my invention; 1. The combination, with a shaft, of a loose pulley thereordinarilysubjected in a clutch of on,l a friction disk looselymounted on the hub' of said pulleyand having a gripping surface, arms pivotd on said 4pulley and having gripping blocks, means for operating said arms. a hub secured on said shaft and provided with arms having loose connections with said disk, substantially as described. g

' 2. The combination, Withva shaft, of a 'pulley loosely mounted thereom' a loosely mounted friction disk having a gripping vsni:iace;.arzns' pivoted on' said pulley and having gripping blocks Yand mechanism for operating said arms,- arms secured, on said shaft and connected with said diskl and permitting said disk to rock or sway lengthwise of said shaft but locking it against continued rotary'movement, substantially as described.

3. -The combination, 'with a shaft, vofl a loose pulley thereon, a loosely mounted friction disk having a gripping surface, arms pivoted on saidpulley and provided with grip'l ping blocks, mechanism forv operating said arms, and

means for locking said-disk against continued rotary movemerit but permittingoscillation of the same said. shaft,'substantia11y as described.

4. The combination, with a shaft, of a loose pulley thereon', a loosely mounted friction disk having a gripping surface, arms pivoted on said pulley and provided with gripping blocks and mechanism for operating said arms, arms secured .on said shaft and having ends .fitting loosely within sockets in said disk, Webs'- connecting said arms with one another and bolts passing loosely through holes in said webs and said disk, and having coiled springs for yieldinglyholding the ends of said arms in said sockets.

5. The combination, with a shaft, of a loose pulley thereon, a' member having a gripping surface, means carried by said pulley for gripping said-surface to lock said pulley and member together,V and means secured on said shaft and having arms fitting loosely within sockets in said memberand whereby a limited. movement of said member is permitted to take up` the shock o'r jar arising from the sudden starting ofthe pulley I v Y 6. Thec'ombination, with a shaft, of a loose pulley thereon, a loosely' mounted friction disk having a gripping surface,- means 0n saidpulley for engaging said-surface and locking said disk and pulley together, and means for locking said disk against continued rotary movement but permitting oscillation of the same lengthwise of said shaft said means comprising arms secured on said shaft and itting loosely Within sockets provided at intervals in said disk, substantially as described.

In witness whereof, I have hereunto set my hand this i 15th day of December, 1906.

ANDR EW E. GAGNON.

lengthwise of 

